For a boy of 14 weeks of age, the normal height range is 159 to 173 cm, with an average height of about 165.9 cm. However, height is affected by genetic factors, diet and exercise habits, and there are differences between individuals. For a 14-week-old boy, the normal height range is between 159 and 173cm, and the average height is about 165.9cm. However, this value is not absolute, because height is affected by genetic factors, diet, exercise, environment, disease and other factors, and there will be some differences between individuals. If the child’s height is significantly lower than that of babies of the same age, it may indicate growth retardation, at this time, you should promptly go to the Children’s Growth and Development Department to improve the bone age, growth hormone, thyroid hormone, cranial nuclear magnetic and other related examinations, such as growth hormone deficiency, and the epiphysis has not yet closed, there is no obvious contraindication to the case, you can consider injecting growth hormone. In normal life, we should pay attention to a balanced diet, consume more calcium-rich foods, and actively engage in physical exercise, such as jogging, swimming, playing basketball, and ensure sufficient sleep.